That was a pretty insensitive comment, Mecurious.
How would you like it if the coin was flipped? What if a lady here asked, "Are all ugly men men's rights activists who hate women?"
As a sideline, is there an equivalent opposite word for feminism? Like masculinism?
Even though I generally find Christianity to be a bit...questionable, a line from the Bible would suffice here: "Do unto others as you would want them to do unto you." Etc.